Smith D L, Palmer S J, Hulland T J, McSherry B J, Blackwell T E
Can Vet J. 1985 Dec;26(12):385-90.
Steers and bulls under feedlot conditions and on an apparently adequate ration developed transitory signs of diarrhea and unthriftiness. One animal became recumbent. Sick and clinically normal animals in the group had elevated serum creatine kinase and aspartate aminotransferase enzyme values and degenerative changes in muscle fibers on biopsy. Feed analysis was carried out and the animals were monitored over several weeks by means of muscle biopsy and serum enzyme analysis as well as by postmortem examination at slaughter. Subclinical myopathy was found in several animals and was thought to be related to low vitamin E content in the high moisture corn ration.
处于饲养场环境且日粮明显充足的阉牛和公牛出现了腹泻和生长不良的短暂症状。有一头动物卧倒不起。该组中患病和临床正常的动物血清肌酸激酶和天冬氨酸转氨酶值升高，活检显示肌纤维有退行性变化。进行了饲料分析，并通过肌肉活检、血清酶分析以及屠宰时的尸检对这些动物进行了数周的监测。在几只动物中发现了亚临床肌病，认为这与高水分玉米日粮中维生素E含量低有关。
